Cats and dogs can hear ultrasound.
350
Domestic pigs average a top speed of about 11 miles per hour.
182
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10